The Practice Whereby Buyers and Sellers Combine Their Expertise and Resources

The practice whereby buyers and sellers combine their expertise and resources to create customized solutions;commit to joint planning;and share customer,competitive,and company information for their mutual benefit,and ultimately the benefit of the customer,is referred to as

A) multichannel selling.
B) cross-functional selling.
C) partnership selling.
D) relationship selling.
E) customized ordering.